The Thermodynamic Properties of High Temperature Aqueous Solutions. V. The Calculation of Ionic Heat Capacities up to 2C0°. Entropies and Heat Capacities above 200°

Criss, Cecil M.; Cobble, J. W.

doi:10.1021/ja01078a004

Cited by 185 publications

(87 citation statements)

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“…From this principle, it also follows that whenever the entropy of an ion is known or can be accurately predicted at two temperatures, the average value of the heat capacity between those two temperatures, C p o avg , also can be calculated, thereby allowing prediction of heat capacities for electrolytes over extended temperature ranges (Criss and Cobble, 1964b). This results from combining the following equation:…”

Section: Criss-cobble Methodsmentioning

confidence: 99%

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Radionuclide Reaction Chemistry as a Function of Temperature at the Cheshire Site

Burton¹,

Bruton²,

Johnson³

et al. 2005

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Section: Criss-cobble Methodsmentioning

confidence: 99%

“…Parameter values for calculating average heat capacities in cal/mol/K (Criss and Cobble, 1964b Table 6. Coefficients for Equation 3-5 for heat capacity estimates from entropy at 25 o C using the methods of , Shock et al (1997aShock et al ( , 1997b Table 7.…”

Section: List Of Tablesmentioning

confidence: 99%

Radionuclide Reaction Chemistry as a Function of Temperature at the Cheshire Site

Burton¹,

Bruton²,

Johnson³

et al. 2005

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“…Here, , [16] and Criss and Gobble [23] for most ionic species. For MDEAH + , they are calculated from the equilibrium constant [24].…”

Section: Model and Data Usedmentioning

confidence: 99%

Thermodynamics of CO2-MDEA using eNRTL with Differential Evolution Algorithm

Vivier¹,

Kamalpour²,

Mehablia³

2011

J Thermodyn Catal

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“…Most of them were, however, confined to the values at 25OC. The method proposed by Crisis and Cobble (11,12) is still very much in use to give entropies and heat capacities of aqueous ions, particularly at higher temperatures. However, we have doubts about the validity of the arbitrarily chosen individual ionic values they proposed, particularly those at elevated temperatures (16 both entropy and heat capacity values of aqueous electrolytes over a wide range of temperatures.…”

Section: Single Ion Heat Capacitiesmentioning

confidence: 99%

“…However, such data are few and often only partially cover the temperature range between the normal melting point and the critical temperature of water (1-10). There are, of course, a few attempts to theoretically generate high temperature data through empirical equations and through using simplified models (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29). Horvath (30) compiled some of the advances made in the various attempts for theoretical calculation of entropy and heat capacity of aqueous at various temperatures.…”

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confidence: 99%

A study of the electrolytic solution process using the scaled particle theory. 5. Heat capacity of aqueous ions at elevated temperatures

Sen¹

1991

Can. J. Chem.

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UTPAL SEN. Can. J . Chem. 69,440 (1991). A theory composite of the scaled particle theory and the Born model of solvent continuum has been used to theoretically calculate the standard heat capacity of hydration as well as the partial molal heat capacity of aqueous ions and electrolytes at elevated temperatures. The uncertainties in the second temperature derivatives of solvent dielectric constant at various temperatures present a barrier to an accurate heat capacity prediction by the theory. Nevertheless, the agreement between the predicted standard heat capacity of electrolytes in solution and the corresponding experimental data, particularly at higher temperatures, is encouraging. Moreover, the composite theory seems to provide the most accurate thermodynamic predictions to date for aqueous electrolytes at higher temperatures without involving any arbitrary adjustable parameter. We therefore use this theory to find the proper ionic scale of the partial molal heat capacities at elevated temperatures. [Traduit par la rkdaction] IntroductionThe need for the data related to the thermodynamic behaviour of electrolytes in solution at elevated temperature is obvious, particularly in understanding corrosion problem in electric power industries and the behaviour of minerals in geothermal systems. A few recent experimental efforts to determine high temperature thermodynamic data for aqueous electrolytes suggest that the trend of the thermodynamic behaviour of electrolytes at elevated temperatures is quite unusual and interesting (1-4). However, such data are few and often only partially cover the temperature range between the normal melting point and the critical temperature of water (1-10). There are, of course, a few attempts to theoretically generate high temperature data through empirical equations and through using simplified models (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29). Horvath (30) compiled some of the advances made in the various attempts for theoretical calculation of entropy and heat capacity of aqueous at various temperatures. Recently, Tanger and Helgeson (31) revised their earlier empirical approach (29) of thermodynamic calculations by introducing additive correction terms to the effective electrostatic radii of aqueous ions to account for the pressure and temperature dependence of the solvent structure and presented the calculated values of various thermodynamic functions of aqueous ions at various temperatures and pressures (30). However, the arbitrariness of the correction terms could not be altogether done away with in spite of generous computer applications.Very recently, Tanger and Pitzer (32) revised an earlier semi

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The Thermodynamic Properties of High Temperature Aqueous Solutions. V. The Calculation of Ionic Heat Capacities up to 2C0°. Entropies and Heat Capacities above 200°

Cited by 185 publications

References 0 publications

Radionuclide Reaction Chemistry as a Function of Temperature at the Cheshire Site

Radionuclide Reaction Chemistry as a Function of Temperature at the Cheshire Site

Thermodynamics of CO2-MDEA using eNRTL with Differential Evolution Algorithm

A study of the electrolytic solution process using the scaled particle theory. 5. Heat capacity of aqueous ions at elevated temperatures

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